Molding-flask.



iro. 735,503.

lsatented August 4, 1903.

APATENT OFFICE.

ELMER HARROLD AND CLINTON WILDERSON, OF LEETONIA, OHIO.

MOLDI'NGfFLASK.

SPECIFICATION forming part of Letters Patent No. 735,503, datedAugust 4, 1903. Application led April 6, 1903. Serial No. 151,343.' (No model.)

To all whom it may concern:

Be it known that we, ELMER HARROLD and CLINTON G. WILDERsoN, citizens of the United States, residing at Leetonia, in the county of Columbiana and'State of Ohio, have invented certain new and useful lmprove` ments in Molding-Flasks; and We do hereby declare the following to be a full, clear, andl ingniolten metal.

More particularly stated, the present in-v vention comprises a detachable iiask-pin having certain novel characteristics which render it especially efficacious and commercially valuable.

Heretofore the cope and drag of moldingflasks have been alined bythe agency of simple cast pintlesV and corresponding sockets secured to or forming part of the respective flasksections. These projecting pintles, however, have always been a source of much annoyance in foundries, owing to the great tendency of breakage, especially during the rough handling of shaking out. To overcome this annoyance and loss is, therefore, another object of our present invention, and this is accomplished by the .withdrawal of said pins, after the flask-sections have been securely closed, for use in like manner upon succeeding flasks, the one set of pins serving indefinitely. Y

Heretofore detachable flask-pins have also been used; but it is a further purpose of the presentV invention to produce an inexpensive one-part pin capable of being readily and most securely interlocked with one flask-section without the intervention of an independent or additional locking member of any description.

The invention will be hereinafter described, and particularly pointed out in the claims following.

In the accompanying drawings, which form sponding letters of [reference indicate the ysame parts in the several -iigures, Figure l represents in perspective a fragment of the ycope and the drag of a molding-fiask having our present invention affixed thereon. Fig.

l2 is a vertical central section through parts illustrated by Fig. l, the flask-pin, however, appearing in side elevation'. Fig. 3 is a top plan view of the invention and of Va small portion of the cope to which attached, and Figfi is a detached perspective view of the flask-pin.

Reference being had to the drawings and letters thereon, A B indicate fragments of the cope and drag, respectively, of an ordinary molding-tlask, C D metallic plates secured to adjacent edges of such flask-sections, and E F perforated lugs projecting from said plates, as clearly shown by Figs. l and 2. The perforation a in lug E diifers from that in lug F only in the fact that the former is of downwardly-converging form, while the latter is of cylindrical bore, though, if preferred, these perforations may be of any other shape or configuration in cross-section. At the base of lug E the surface' of plate C may be recessed slightly, as at b, and this is surmounted by au abutment c, which pro jects from and may be cast integral with the surface of said plate. Y

G represents the detachable and rotatable flask-pin, which may be furnished with an integral angular handle H, as clearly shown, and is provided with an enlarged cam-faced head I, the peripherywhere'of is slightly mutilated, as at d. Beneath its head I, as at e, pin G is .of converging formto correspond with the convergence of perforation ain lu g E.

This being a description of our invention in its preferred form of construction, its use and operation may be brieliy stated-'as follows: Pin G is first inserted in perforation a of lug E until its converging walls e engage those of said perforation a, the mutilation d in head I permitting passage of abutment c.

A partial rotation of the pin now by agency of its handle H serves to firmly seats aid pin in taper t with lug E by the cam action of head I beneath the fixed abutment c. The cope of a flask now being placed above the drag in the'usual manner, it is quite obvious IOO that pins G will readily enter the perforations in their respective lugs F, thus guiding and accurately alining the asksections ready for reception of patterns and sand. The fiask having been properly made up for pouring, it is always customary to clamp the flask-sections firmly together by means of rigidclampsprovided forthepurpose. When occasion requires, our improved detachable ask-pins are removed by a reverse rotation, whereupon they may be similarly employed in making up succeeding asks, one set of pins serving a molder for his entire days work.

This being a description of our invention in its preferred form and arrangement, it should be understood that we by no means limit ourselves to this precisely, as many structural changes in the form and arrangement of parts will suggest themselves to the skilled mechanic and may be made without departing from the spirit and scope of our invention. For example, it is not essential that the pin G should be a taper pin. The depression b might be made slightly deeper to serve as a fixed abutment for cam-head I and the abutment c in that event dispensed with, or obviously the handle H might be a detachable handle in the nature of a wrench or Wrench-pin.

Having thus described our invention, what We now claim, and desire to secure by Letters Patent, is-

1. In a molding-flask the combination with perforated lugs secured to the cope and drag sections respectively, of a detachable flaskpin in taper fit with one of said lugs and loose fit with the other of said lugs, substantially as described.

2. In a molding-dash the combination with perforated lugs secured to the cope and drag sections respectively, of a detachable flaskpin in taper fit with one of said lugs and loose fit with the other of said lugs, and a cam for forcing said pin into the tapering seat, substantially as described.

3. In a molding-fiask the combination with perforated lugs secured to the cope and drag sections respectively, of a detachable flaskpin in taper fit with one of said lugs and loose fit with the other of said lugs, a fixed abutment upon one of the fiask-sections, and a cam interposed between said abutment and the pin aforesaid for forcing the latter into its tapering seat, substantially as described.

4:. In a molding-flask the combination with perforated lugs secured to the cope and drag sections respectively, of a detachable flaskpin in taper fit with one of said lugs and loose t with the other of said lugs, a fixed abutment upon one of the flask-sections, and a cam integral with the pin aforesaid for coacting with said abutment to force the pin into the tapering seat, substantially as described.

5. In a molding-fiask the combination with perforated lugs secured to the cope and drag sections respectively, of a detachable flaskpin in taper fit with one of said lugs and loose fit with the other of said lugs, a fixed abutment upon one of the fiask-sections, a camhead upon the pin aforesaid for coacting with said abutment to force the pin into its tapering seat, and a gate in the camhead to permit passage of the abutment aforesaid, substantially as described.

6. In a molding-flask the combination with perforated lugs secured to the cope and drag sections respectively, of a detachable flaskpin in taper fit with one of said lugs and loose fit with the other of said lugs, a fixed abutment upon one of the flask-sections, a horizontally-actuated cam upon the pin aforesaid for coacting with said abutment to force the pin into its tapering seat, and a suitable handle projecting from the cam as a means of rotating same, substantiallyas described.

In testimony whereof We subscribe our signatures in presence of two witnesses.

ELMER HARROLD. CLINTON G. WILDERSON.

Witnesses:

JOHN B. MORGAN, CHARLES FRITZ. 

